英语翻译下!wetness impregnation? Catalysts were prepared by wetness impregnation of (NH4)2S2O8 with zirconium hydroxide. The hydroxide was obtained from a pre-shaped precipitation medium . In brief, to a required volume of a freshly prepared aqueous (NH4)2S2O8 (E-Merck) solution, zirconium hydroxide was added and this mixture was kept under stirring condition for 30 min at room temperature. The samples were then dried in an oven at 90◦C and subsequently at 110 ◦C under static air condition. Parts of each of the samples were heated at various temperatures in an electric furnace under static air and then used for further studies查看更多2个回答 . 5人已关注